80850779 has 2 divisors, whose sum is σ = 80850780. Its totient is φ = 80850778.

The previous prime is 80850751. The next prime is 80850787. The reversal of 80850779 is 97705808.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 80850779 - 2¹² = 80846683 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (80850739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40425389 + 40425390.

It is an arithmetic number, because the mean of its divisors is an integer number (40425390).

Almost surely, 2^80850779 is an apocalyptic number.

80850779 is a deficient number, since it is larger than the sum of its proper divisors (1).

80850779 is an equidigital number, since it uses as much as digits as its factorization.

80850779 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 141120, while the sum is 44.

The square root of 80850779 is about 8991.7061228668. The cubic root of 80850779 is about 432.4090115654.

The spelling of 80850779 in words is "eighty million, eight hundred fifty thousand, seven hundred seventy-nine".